package com.sky.service.impl;


import com.alibaba.fastjson.JSON;
import com.alibaba.fastjson.JSONObject;
import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.context.BaseContext;
import com.sky.dto.*;
import com.sky.entity.AddressBook;
import com.sky.entity.OrderDetail;
import com.sky.entity.Orders;
import com.sky.entity.ShoppingCart;
import com.sky.exception.AddressBookBusinessException;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.exception.OrderBusinessException;
import com.sky.exception.ShoppingCartBusinessException;
import com.sky.mapper.*;
import com.sky.result.PageResult;
import com.sky.result.Result;
import com.sky.service.OrderService;
import com.sky.utils.HttpClientUtil;
import com.sky.utils.WeChatPayUtil;
import com.sky.vo.OrderPaymentVO;
import com.sky.vo.OrderStatisticsVO;
import com.sky.vo.OrderSubmitVO;
import com.sky.entity.User;
import com.sky.vo.OrderVO;
import com.sky.websocket.WebSocketServer;
import io.swagger.annotations.ApiOperation;
import lombok.extern.slf4j.Slf4j;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Sort;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PutMapping;

import java.math.BigDecimal;
import java.time.LocalDateTime;
import java.util.*;
import java.util.stream.Collectors;

@Service
@Slf4j
public class OrderServiceImpl implements OrderService {


    @Autowired
    private OrderMapper orderMapper;
    @Autowired
    private OrderDetailMapper orderDetailMapper;
    @Autowired
    private AddressBookMapper addressBookMapper;
    @Autowired
    private ShoppingCartMapper shoppingCartMapper;
    @Autowired
    private WeChatPayUtil weChatPayUtil;
    @Autowired
    private UserMapper userMapper;
    @Autowired
    private OrderService orderService;
    @Autowired
    private WebSocketServer webSocketServer;

    // 用户下单
    @Transactional
    @Override
    public OrderSubmitVO submitOrder(OrdersSubmitDTO ordersSubmitDTO) {

        //检查地址
        AddressBook addressBook = addressBookMapper.queryById(ordersSubmitDTO.getAddressBookId());
        if(addressBook == null){
            //地址不存在
            throw new AddressBookBusinessException(MessageConstant.ADDRESS_BOOK_IS_NULL);
        }
        //检查购物车
        Long userId =BaseContext.getCurrentId();
        ShoppingCart shoppingCart =ShoppingCart.builder()
                                            .userId(userId)
                                            .build();

        List<ShoppingCart> shoppingCartList = shoppingCartMapper.list(shoppingCart);
        if(shoppingCartList == null || shoppingCartList.size() == 0){
            //购物车为空
            throw new ShoppingCartBusinessException(MessageConstant.SHOPPING_CART_IS_NULL);
        }
        // 1.插入订单数据
        Orders orders = new Orders();
        //属性拷贝
        BeanUtils.copyProperties(ordersSubmitDTO,orders);

        orders.setOrderTime(LocalDateTime.now());
        orders.setPayStatus(Orders.UN_PAID);
        orders.setStatus(Orders.PENDING_PAYMENT);
        //订单号
        orders.setNumber(String.valueOf(System.currentTimeMillis()));

        orders.setPhone(addressBook.getPhone());
        orders.setConsignee(addressBook.getConsignee());
        orders.setUserId(userId);
        orders.setAddress(addressBook.getDetail());
        orderMapper.insert(orders);
        // 2.插入订单详情数据
        List<OrderDetail> orderDetails = new ArrayList<>(); //创建一个订单详情对象
        for (ShoppingCart cart : shoppingCartList) {
            OrderDetail orderDetail =new OrderDetail();
            //订单详情对象属性设置
            BeanUtils.copyProperties(cart,orderDetail);
            //设置订单id
            orderDetail.setOrderId(orders.getId());
            orderDetails.add(orderDetail);
        }
        orderDetailMapper.insertBatch(orderDetails);

        // 3.清空购物车数据
        shoppingCartMapper.delete(shoppingCart);   //参数只有一个userId
        // 4.返回VO
        OrderSubmitVO orderSubmitVO = OrderSubmitVO.builder()
                .id(orders.getId())
                .orderNumber(orders.getNumber())
                .orderAmount(orders.getAmount())
                .orderTime(orders.getOrderTime())
                .build();

        return orderSubmitVO;
    }

    /**
     * 订单支付
     *
     * @param ordersPaymentDTO
     * @return
     */
    public OrderPaymentVO payment(OrdersPaymentDTO ordersPaymentDTO) throws Exception {
        // 当前登录用户id
        Long userId = BaseContext.getCurrentId();
        User user = userMapper.getById(userId);

        //调用微信支付接口，生成预支付交易单
        JSONObject jsonObject = weChatPayUtil.pay(
                ordersPaymentDTO.getOrderNumber(), //商户订单号
                new BigDecimal(0.01), //支付金额，单位 元
                "苍穹外卖订单", //商品描述
                user.getOpenid() //微信用户的openid
        );
        //没有微信授权,简化这部分功能

        if (jsonObject.getString("code") != null && jsonObject.getString("code").equals("ORDERPAID")) {
            throw new OrderBusinessException("该订单已支付");
        }

        OrderPaymentVO vo = jsonObject.toJavaObject(OrderPaymentVO.class);
        vo.setPackageStr(jsonObject.getString("package"));
        return vo;
    }

    /**
     * 支付成功，修改订单状态
     *
     * @param outTradeNo
     */
    public void paySuccess(String outTradeNo) {

        // 根据订单号查询订单
        Long userId = BaseContext.getCurrentId();
        Orders ordersDB = orderMapper.getByNumberAndUserId(outTradeNo,userId);

        // 根据订单id更新订单的状态、支付方式、支付状态、结账时间
        Orders orders = Orders.builder()
                .id(ordersDB.getId())
                .status(Orders.TO_BE_CONFIRMED)
                .payStatus(Orders.PAID)
                .checkoutTime(LocalDateTime.now())
                .build();

        //通过websocket向客户端推送消息
        Map map = new HashMap();
        map.put("type", 1);
        map.put("orderId", ordersDB.getId());
        map.put("content", "订单号：" + ordersDB.getNumber() + "支付成功");
        String json = JSON.toJSONString(map);
        webSocketServer.sendToAllClient(json);
        //修改订单状态
        orderMapper.update(orders);
    }

    /**
     * 历史订单列表
     * @param ordersPageQueryDTO
     * @return
     */
    @Override
    public PageResult pageQuery(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开启分页
        ordersPageQueryDTO.setUserId(BaseContext.getCurrentId());
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        //查询分页结果
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        List<OrderVO> list =new ArrayList<>();
        if (page != null && page.getTotal() > 0) {
            for (Orders orders : page) {
                OrderVO orderVO = new OrderVO();
                BeanUtils.copyProperties(orders, orderVO);
                //查询orderdetail
                List<OrderDetail> orderDetailList = orderDetailMapper.queryByOrderId(orders.getId());
                orderVO.setOrderDetailList(orderDetailList);
                list.add(orderVO);
            }
        }
        return new PageResult(page.getTotal(), list);
    }


    /**
     * 订单详情
     * @param id
     * @return
    * */
    @Override
    public OrderVO getById(Long id) {
        //先查询order
        Orders orders = orderMapper.getById(id);
        OrderVO orderVO = new OrderVO();
        BeanUtils.copyProperties(orders,orderVO);
        //查询orderdetail
        List<OrderDetail> orderDetailList = orderDetailMapper.queryByOrderId(id);
        orderVO.setOrderDetailList(orderDetailList);

        return orderVO;
    }

    /**
     * 取消订单
     * @param id
     * @return
     */
    @Override
    public void cancel(Long id) {
        //在订单不同状态下允许取消
        // 根据id查询订单
        Orders ordersDB = orderMapper.getById(id);

        // 校验订单是否存在
        if (ordersDB == null) {
            throw new OrderBusinessException(MessageConstant.ORDER_NOT_FOUND);
        }
        //订单状态 1待付款 2待接单 3已接单 4派送中 5已完成 6已取消
        if (ordersDB.getStatus() > 2) {
            throw new OrderBusinessException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //取消就是修改订单状态为4
        Orders orders =Orders.builder()
                .id(id)
                .userId(BaseContext.getCurrentId())
                .status(4)
                .build();

        // 订单处于待接单状态下取消，需要进行退款
        if (ordersDB.getStatus().equals(Orders.TO_BE_CONFIRMED)) {
            //支付状态修改为 退款
            orders.setPayStatus(Orders.REFUND);
        }
        //修改订单
        // 更新订单状态、取消原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason("用户取消");
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }


    /**
     * 再来一单
     * @param id
     * @return
     */
    @Override
    public void reOrder(Long id) {
        //逻辑就是将查询到的订单数据给购物车
        //数据在订单详情表中
        List<OrderDetail> orderDetailList = orderDetailMapper.queryByOrderId(id);
        //购物车
        // 将订单详情对象转换为购物车对象
        List<ShoppingCart> shoppingCartList = orderDetailList.stream().map(x -> {
            ShoppingCart shoppingCart = new ShoppingCart();

            // 将原订单详情里面的菜品信息重新复制到购物车对象中
            BeanUtils.copyProperties(x, shoppingCart, "id");  // 排除 id 属性nj
            // 设置购物车中菜品对应的用户
            shoppingCart.setUserId(BaseContext.getCurrentId());
            shoppingCart.setCreateTime(LocalDateTime.now());

            return shoppingCart;
        }).collect(Collectors.toList());
        //删除用户原有的可能购物车数据
        ShoppingCart shoppingCart1 = new ShoppingCart();
        shoppingCart1.setUserId(BaseContext.getCurrentId());
        shoppingCartMapper.delete(shoppingCart1);
        //批量插入到购物车
        shoppingCartMapper.insertBatch(shoppingCartList);
    }


    // 条件查询
    @Override
    public PageResult conditionSearch(OrdersPageQueryDTO ordersPageQueryDTO) {
        //开启分页
        PageHelper.startPage(ordersPageQueryDTO.getPage(),ordersPageQueryDTO.getPageSize());
        Page<Orders> page = orderMapper.pageQuery(ordersPageQueryDTO);
        //要包含菜品名字,所有要查询orderdetail 表
        //对page进行stream流转换类型为OrderVO
        List<OrderVO> orderVOList = page.stream().map(order -> {
            OrderVO orderVO = new OrderVO();
            BeanUtils.copyProperties(order,orderVO);
            List<OrderDetail> orderDetailList = orderDetailMapper.queryByOrderId(order.getId());
            orderVO.setOrderDetailList(orderDetailList);
            //对菜品名字进行组装
            for (OrderDetail orderDetail : orderDetailList) {
                StringBuilder dishNames = new StringBuilder();
                dishNames.append(orderDetail.getName())
                        .append("*")
                        .append(orderDetail.getNumber())
                        .append(",");
                orderVO.setOrderDishes(dishNames.toString());
            }
            return orderVO;
        }).collect(Collectors.toList());
        return new PageResult(page.getTotal(),orderVOList);
    }

    //订单统计
    @Override
    public OrderStatisticsVO statistics() {
        //构建一个 map 集合，封装数据
        //调用统计方法  返回的值进行封装成 OrderStatisticsVO
        OrderStatisticsVO orderStatisticsVO =  orderMapper.countStutas();
        return orderStatisticsVO;
    }

    //修改订单状态为已完成
    @Override
    public void complete(Long id) {
        //查询订单状态
        Orders orders = orderMapper.getById(id);
        //判断订单状态 只有待派送的订单才能完成
        if(orders!= null &&orders.getStatus() != Orders.DELIVERY_IN_PROGRESS){
            throw new DeletionNotAllowedException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //更新订单状态
        orders.setDeliveryTime(LocalDateTime.now());
        orders.setStatus(Orders.COMPLETED);
        orderMapper.update(orders);
    }

    //订单拒接
    @Override
    public void rejection(OrdersRejectionDTO ordersRejectionDTO) {
        //查询订单状态
        Orders orders = orderMapper.getById(ordersRejectionDTO.getId());
        //判断订单状态
        if(orders!= null && orders.getStatus() != Orders.TO_BE_CONFIRMED){
            throw new DeletionNotAllowedException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //更新订单状态
        orders.setStatus(Orders.CANCELLED);

        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        orders.setId(orders.getId());
        orders.setStatus(Orders.CANCELLED);
        orders.setRejectionReason(ordersRejectionDTO.getRejectionReason());
        orders.setCancelTime(LocalDateTime.now());

        orderMapper.update(orders);
    }

    // 接单
    @Override
    public void confirm(OrdersConfirmDTO ordersConfirmDTO) {
        //查询订单状态
        Orders orders = orderMapper.getById(ordersConfirmDTO.getId());
        //判断订单状态
        if(orders!= null && orders.getStatus() != Orders.TO_BE_CONFIRMED){
            throw new DeletionNotAllowedException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //修改订单状态
        orders.setStatus(Orders.CONFIRMED);

        orderMapper.update(orders);
    }

    //派送
    @Override
    public void delivery(Long id) {
        //查询订单状态
        Orders orders = orderMapper.getById(id);
        //判断订单状态
        if(orders!= null && orders.getStatus() != Orders.CONFIRMED){
            throw new DeletionNotAllowedException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //修改订单状态
        orders.setStatus(Orders.DELIVERY_IN_PROGRESS);
        orderMapper.update(orders);
    }

    //商家取消订单
    @Override
    public void Empcancel(OrdersCancelDTO ordersCancelDTO) {
        Long orderId = ordersCancelDTO.getId();
        //查询订单状态
        Orders orders = orderMapper.getById(orderId);
        if (orders.getPayStatus() == 1) {
            log.info("申请退款：");
        }
        // 拒单需要退款，根据订单id更新订单状态、拒单原因、取消时间
        orders.setStatus(Orders.CANCELLED);
        orders.setCancelReason(ordersCancelDTO.getCancelReason());
        orders.setCancelTime(LocalDateTime.now());
        orderMapper.update(orders);
    }

    // 催单
    @Override
    public void reminder(Long id) {
        //先根据id查询订单
        //查询订单状态
        Orders orders = orderMapper.getById(id);
        //判断订单状态
        if(orders == null) {
            throw new DeletionNotAllowedException(MessageConstant.ORDER_STATUS_ERROR);
        }
        //构建json数据
        Map map = new HashMap();
        map.put("type", 2);
        map.put("orderId",id);
        map.put("content", "订单号"+orders.getNumber()+"催单了");
        String json = JSON.toJSONString(map);
        //通过websocket向客户端发送消息
        webSocketServer.sendToAllClient(json);

    }


    /**
     * 检查客户的收货地址是否超出配送范围
     * @param address
     *//*
    private void checkOutOfRange(String address) {
        Map map = new HashMap();
        map.put("address",shopAddress);
        map.put("output","json");
        map.put("ak",ak);

        //获取店铺的经纬度坐标
        String shopCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        JSONObject jsonObject = JSON.parseObject(shopCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("店铺地址解析失败");
        }

        //数据解析
        JSONObject location = jsonObject.getJSONObject("result").getJSONObject("location");
        String lat = location.getString("lat");
        String lng = location.getString("lng");
        //店铺经纬度坐标
        String shopLngLat = lat + "," + lng;

        map.put("address",address);
        //获取用户收货地址的经纬度坐标
        String userCoordinate = HttpClientUtil.doGet("https://api.map.baidu.com/geocoding/v3", map);

        jsonObject = JSON.parseObject(userCoordinate);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("收货地址解析失败");
        }

        //数据解析
        location = jsonObject.getJSONObject("result").getJSONObject("location");
        lat = location.getString("lat");
        lng = location.getString("lng");
        //用户收货地址经纬度坐标
        String userLngLat = lat + "," + lng;

        map.put("origin",shopLngLat);
        map.put("destination",userLngLat);
        map.put("steps_info","0");

        //路线规划
        String json = HttpClientUtil.doGet("https://api.map.baidu.com/directionlite/v1/driving", map);

        jsonObject = JSON.parseObject(json);
        if(!jsonObject.getString("status").equals("0")){
            throw new OrderBusinessException("配送路线规划失败");
        }

        //数据解析
        JSONObject result = jsonObject.getJSONObject("result");
        JSONArray jsonArray = (JSONArray) result.get("routes");
        Integer distance = (Integer) ((JSONObject) jsonArray.get(0)).get("distance");

        if(distance > 5000){
            //配送距离超过5000米
            throw new OrderBusinessException("超出配送范围");
        }
    }*/



}
